Lili Reinhart stars in the new music video from BTS!

The 29-year-old Riverdale actress appears in the video for Arirang lead single “SWIM,” the highly anticipated lead single from the K-pop boy band’s first album since their required military enlistment in South Korea.

Keep reading to find out more…

RM, Jin, SUGA, J-hope, Jimin, V and Jung Kook all star in the video, which was filmed in Lisbon, Portugal and directed by Tanu Muino.

In the video, Lili is looking at ships in a museum, when she suddenly wakes up on a sailboat with BTS as they work together to set sail across the sea.

“Swim, swim / Water falling off your skin / Swim, swim / I could spend a lifetime watching you / Swim, swim / This is how it all begins,” they sing.

The song was written by James Essien, Sean Foreman, Tyler Spry, Jamison Baken, Ryan Tedder, RM, Kirsten Spencer, Derrick Milano and Pdogg, and produced by Tyler Spry and Leclair.

“Keep an eye on them for me, thanks 🙏🏻 @bts.bighitofficial #KeepSwimming #SWIM,” she amusingly captioned a video of her on set with the boys.

Watch the video for “Swim”…

Read the lyrics to “Swim”…

Find out what the boys had to say about fame on their new song “Normal.”